JP5828567B2 - Hose clamp and manufacturing method thereof - Google Patents

Description

  The present invention relates to a hose clamp and a manufacturing method thereof.

  Patent Document 1 discloses a hose connection device for tightening a connection portion between a hose and a pipe. The hose connection device disclosed herein has a hose clamp formed in a ring shape. The hose clamp is formed by bending a belt-shaped leaf spring material into a ring shape, and a bifurcated first end portion in which a long hole-shaped through hole is opened is formed on one end side in the longitudinal direction. The first end portion is bent in the radial direction within a range including the through hole to form a first knob portion. The other end of the hose clamp has a second end that is narrower than the opening width of the through hole. The second end is formed so that the second knob is bent in the radial direction so as to face the first knob.

  The hose clamp disclosed herein can be held in a state where the first and second knobs are brought close to each other and sandwiched by a holder, and thus the inner diameter of the hose clamp can be held in an expanded state. it can. On the other hand, by pulling out the holder, the hose clamp is shifted to a reduced diameter state by its own elastic force, and the connection portion between the hose and the pipe can be tightened.

Utility Model Registration No. 25661820

  As described above, when the hose clamp is bent into a ring shape, the second end portion must pass through the through hole on the first end portion side. Therefore, the width dimension of the second end portion must be equal to or narrower than the opening width of the through hole. That is, it is difficult to secure a sufficient width dimension for the second knob due to the restriction due to the opening width of the through hole. For this reason, since the width | variety of 2nd knob part itself is narrow and the difference of the width dimension with the 1st knob part is large, the knob operation of both knob parts tends to become unbalanced. As a result, the above hose clamp has a problem that it is difficult to perform a knob operation.

  This invention is completed based on the above situations, Comprising: It aims at providing the hose clamp which can make a knob operation easy, and its manufacturing method.

(First invention)
In the first invention of this application, a belt-like plate material is bent into a ring shape so as to cross over the peripheral surface to form a tightening portion, and the connection portion between the hose and its connection partner can be tightened at this tightening portion. Hose clamp,
The plate member is formed in a substantially line-symmetric shape with respect to the X axis, which is a central axis extending along the longitudinal direction, and is disposed on one end side in the longitudinal direction, and a first knob operation surface is formed at the end portion. A first end;
A second end portion disposed on the other end side in the longitudinal direction and having a second end operation surface formed opposite to the first knob operation surface at the end portion;
A long hole-shaped through hole is opened on the first end side and closer to the center in the longitudinal direction than the first knob operation surface, and is longer than the second knob operation surface on the second end side. Near the center of the direction, a narrow portion that can enter the through hole is formed,
The second knob operating surface is
A base region formed to be substantially smaller than the opening width of the through hole, and an outer width dimension of the second knob operation surface arranged to be foldable with respect to the base region at the side edge in the width direction of the base region. Is formed from an extended region that is wider than the opening width of the through hole .

According to the present invention, when the strip-shaped plate material is bent into a ring shape , the expansion region is bent with respect to the base region on the second knob operation surface. By doing so, since the outer width dimension of the second knob operation surface is reduced, the second end side can be passed without interfering with the through hole when the plate member is bent along the X axis. If the extended region is then folded back, the outer width dimension of the second knob operation surface can be expanded without being restricted by the opening width of the through hole, and therefore, a good knob operability can be obtained.

(1) In at least one of the first knob operation surface and the second knob operation surface, a protruding portion is formed to protrude outward in the thickness direction on the surface opposite to the surface on which they face each other. .

According to such a configuration, when the operator picks and operates both the first and second knob operation surfaces, the operator's finger is applied to the protruding portion and touches the peripheral edge portion of both knob operation surfaces. It is hard to hurt your fingers.
(2) In at least one of the first and second knob operation surfaces, a relief portion is formed by bending at least one peripheral edge portion toward the facing surface side.

According to such a configuration, since the peripheral edges of both picking operation surfaces include those bent to the opposite surface side by the relief portion, the peripheral edge that becomes the edge of both picking operation surfaces is thereby kept away from the finger. There is no need to touch the part with your finger. Therefore, the situation where an operator hurts a finger can be avoided.
(3) At least one of the first and second knob operating surfaces has a recess or hole for preventing slippage.
According to such a configuration, when the operator picks and operates the first picking operation surface or the second picking operation surface, the peripheral edge of the hole or the recess is caught and the slip is prevented.

(Second invention)
Further, the second invention of this application is a method for manufacturing a hose clamp, in which a strip-shaped plate material is bent into a ring shape so as to cross on a peripheral surface, and a connection portion between a hose and a connection partner thereof is tightened.
Both end portions of the plate material are a first end portion and a second end portion, a first picking operation surface and a second picking operation surface are formed at the respective leading ends of the first end portion and the second end portion, and A passing portion is formed near the center of the longitudinal direction from at least one of the knob operating surfaces of both knob operating surfaces, and the plate material is annular along the X axis, which is the central axis along the longitudinal direction. Before bending to the at least the other side of both knob operation surfaces, an outer width adjustment step to be an interference avoidance form having an outer width dimension that does not interfere with the site around the passing part,
The center of the longitudinal direction of the plate material is bent in an annular shape along the X-axis with the bending being the lowest point, and at least the other side of both knob operation surfaces is allowed to pass through the passing portion, A fastening part forming step of forming a fastening part that can be deformed in the reduced diameter and enlarged diameter direction by crossing the second end part on the peripheral surface;
After this tightening part forming step, for at least the other side of the two knob operation surfaces, a widening step for processing into an expanded form in which the same surface is expanded in the width direction;
It has the characteristic that it contains.

You may add the following structure to the manufacturing method of the hose clamp which is 2nd invention.
(1) The passing part is a through hole formed in the shape of a long hole at the first end, and the entire outer width passes through the second knob operation surface by bending both sides in the width direction in the outer width adjusting step. The interference avoidance form is formed to be equal to or narrower than the opening width of the hole, and the second knob operating surface is passed through the through hole in the tightening portion forming step, and both sides in the width direction are folded back in the widening step. It is made into the widening form.
(2) The plate member is formed in a substantially point-symmetric shape with respect to the Y axis that is orthogonal to the X axis and passes through the center of the plate member in the longitudinal direction, and a first knob formed at the longitudinal end portion of the first end portion. Both the operation surface and the second knob operation surface are formed with a width range that straddles the two regions sandwiching the X axis, while the passing parts disposed on the first end side and the second end side are both It is a thinning area that is notched to a depth that reaches or crosses the X axis from one side edge of the plate material inward,
In the outer width adjustment step, first knob operation surface and the second knob operation surface by bending the side areas thinned region was arranged among the two regions across the X-axis together longitudinal bent portion The interference avoiding form in which the side surface of the X-axis is located along the X axis or away from the X axis,
The first knob operation surface and the second knob operation surface are widened by folding back the bent portion in the widening step.
(3) In at least one of the first knob operation surface and the second knob operation surface, a protrusion that protrudes outward in the thickness direction is formed on the surface opposite to the surface on which they face each other. A forming step is included.
(4) An escape portion forming step for forming an escape portion in which at least one edge of the peripheral edge is bent toward the opposite surface side in at least one of the first knob operation surface and the second knob operation surface is included. .
(5) A step for forming a recess or a through hole for preventing slipping is included in at least one of the first and second knob operation surfaces.

The perspective view of the hose clamp of this Embodiment 1. Same front view Same top view Same development AA line sectional view of FIG. Hose clamp molding process diagram The perspective view of the hose clamp which concerns on Embodiment 2. Same molding process diagram The principal part enlarged view of the hose clamp of Embodiment 3. The principal part enlarged view of the hose clamp of Embodiment 4. The principal part enlarged view of the hose clamp of Embodiment 5 The principal part enlarged view of the hose clamp of Embodiment 6. BB sectional view of FIG. The perspective view which expands and shows the principal part of the hose clamp of Embodiment 7. The principal part enlarged view of the hose clamp of Embodiment 8.

<Embodiment 1>
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. The hose clamp H1 of this embodiment is integrally formed by a plate material made of spring steel. As shown in FIG. 4, the hose clamp is formed in a strip shape extending in the longitudinal direction (a direction along the X axis described later) in the deployed state. The belt-like plate material 1 is bent into a ring shape along the X axis from the developed state, thereby forming a tightening portion 2 that can be elastically deformed in the reduced diameter and enlarged diameter directions. Further, both end portions of the hose clamp protrude from the fastening portion 2 radially outward to become first and second knob portions 3 and 4, respectively. Both the knobs 3 and 4 face each other in the circumferential direction.

  Now, as shown in FIG. 4, the plate 1 for forming the hose clamp H <b> 1 is formed in a symmetrical shape with respect to the X axis that is the central axis along the longitudinal direction. At one end portion (left end portion in FIG. 4: first end portion 5) of the plate member 1 of the hose clamp H1, an elongated through hole 7 (passed portion) extending along the longitudinal direction is opened. . The first end portion 5 is formed in a bifurcated shape with connecting pieces 8 disposed on both sides of the through hole 7 in the width direction. The through hole 7 is formed such that the opening end on the front end side in the longitudinal direction is wide and gradually becomes narrower toward the opening end on the opposite side. In the first end portion 5, a region on the tip side of the through hole 7 is a first knob operating surface 9.

  In the plate material 1 of the hose clamp H1, the width dimension between the side edges is formed substantially uniformly in the range from the tip of the first end portion 5 to about 2/3 of the longitudinal direction. A pair of triangular windows 10 are opened on one side of the uniform width region in the longitudinal direction (the side where the through hole 7 is not formed). Both triangular windows 10 are each formed in a substantially triangular shape, and are arranged so that the apex portions of the respective triangles face each other. Further, as shown in FIG. 4, the two triangular windows 10 are arranged at symmetrical positions with a Y axis passing through the center in the longitudinal direction and perpendicular to the X axis.

  At the other end portion of the plate 1 of the hose clamp H1 (the right end portion in FIG. 4: the second end portion 6), a narrow portion 11 is formed continuously with the uniform width region described above. The narrow portion 11 is formed so as to gradually become narrower toward the tip end side of the second end portion 6, but is formed to be narrower than the minimum opening width W 0 of the through hole 7 even at the widest root portion. Has been. The tightening portion 2 described above is such that the first end portion 5 and the second end portion 6 intersect on the circumferential surface in the process of bending the plate material 1 in the unfolded state into a ring shape along the X axis. Formed. At this time, the narrow portion 11 enters the through hole 7 and is positioned between the two connecting pieces 8. At this time, the narrow portion 11 is substantially flush with the two connecting pieces 8 and constitutes a part of the inner peripheral surface of the tightening portion 2 together with the two connecting pieces 8.

Both corners on the first end 5 side of the uniform width region are chamfered 12 in an arc shape, but both corners on the narrow width portion 11 side are chamfered 13 in a straight line. The double-sided chamfer 13 continues to the narrow portion 11 via the arcuate surface 13A. The narrow part 11 continues to the second knob operating surface 15 via the connection part 14 that gradually becomes wider.

  As shown in FIG. 3, the second knob operation surface 15 is formed to have substantially the same width as the first knob operation surface 9. That is, the second knob operating surface 15 is formed with a width that is greater than the maximum opening width W1 of the through hole 7. Further, as shown in the figure, the first and second knob operating surfaces 9 and 15 face each other in the circumferential direction of the fastening portion 2 and face each other in an aligned state with almost no displacement in the axial direction of the fastening portion 2. Yes.

  The upper edges of the first and second knob operation surfaces 9 and 15 are slightly bent toward the inside (the other knob operation surface side) to form a relief portion 16. By doing this, even when the upper edge portion of both knob operation surfaces 9 and 15 is an edge when the outer surface side of both knob operation surfaces 9 and 15 is picked with a finger, it is difficult to touch the finger with the same portion. doing. In addition, three protrusions 17 are provided on each of the knob operation surfaces 9 and 15. In this embodiment, each protrusion 17 is formed in a rib shape that is long in the vertical direction (the radial direction of the tightening portion 2), and is arranged in parallel in the width direction. Further, each projecting portion 17 is formed by knocking out so as to project to the outer surface side of both knob operation surfaces 9 and 15. Even if both side edges in the width direction (direction along the Y-axis) of both knob operation surfaces 9 and 15 are edges, these protrusions 17 make it difficult to touch the same part with a finger. Further, the projecting surface of each projecting portion 17 is rounded to make it difficult to hurt the finger during the picking operation.

Next, according to FIG. 6, the processing method of the hose clamp H1 of Embodiment 1 is demonstrated.
(Developed shape forming process: see FIG. 6 (I))
First, the unfolded plate material 1 punched into a predetermined shape from the base material is obtained. In this state, as described above, the second knob operating surface 15 is formed wider than the opening width of the through hole 7. Therefore, when the plate member 1 is bent in a ring shape along the X axis, both side portions in the width direction of the second knob operating surface 15 interfere with portions around the through hole 7 (specifically, the connecting piece 8). Become. That is, the second knob operating surface 15 is arranged at the center in the width direction and has a base region 18 extending to the tip with substantially the same width as the width of the tip of the narrow portion 11 and a pair of continuous base regions 18 on both sides in the width direction. An extended region 19 is formed.
(Outer width adjustment process: see Fig. 6 (II))
A predetermined bending process is given with respect to both the expansion areas 19 of the 2nd knob operation surface 15 after an expansion | deployment shape formation process (FIG. 6 (II) state). That is, the second picking operation surface 15 is bent inward substantially at a right angle with the boundary between the base region 18 and the two expansion regions 19 as a bending edge 20. As a result of this bending, the second picking operation surface 15 has a “squeezed” shape in which the entire width is reduced by the two expanded regions 19 facing each other (interference avoidance mode). The outer width (W2 shown in FIG. 4) of the entire second knob operation surface 15 in this state is set to be smaller than the minimum opening width (W0) of the through hole 7. Thus, the positions where the two extended regions 19 are bent are the non-interfering positions where the second knob operating surface 15 enters without interfering with the opening edge of the through hole 7 when the plate material is bent in a ring shape along the X axis. Position.
(Tightening part forming process: see Fig. 6 (III) (IV))
Next, a ring-shaped bending process is performed from the developed state. In that case, the plate 1 in the unfolded state is bent into an arc shape along the X axis while the Y axis is the apex of bending. Then, after the first end portion 5 side is erected almost vertically, the second end portion 6 side is bent in advance of the first end portion 5 side (state (III)). At this time, the second knob operating surface 15 enters the through hole 7 in a non-interfering state. Subsequently, the first end portion 5 side is bent in the same manner, whereby the first and second end portions 5 and 6 cross on the circumferential surface, and the shape as the tightening portion 2 is generally obtained.
(Wide widening process: see Fig. 6 (V))
In this step, a process is performed in which the two expanded regions 19 in the folded state are folded back around the folding edge 20. As a result, the second knob operation surface 15 returns to the original form (the widened form) in which both the expanded regions 19 are expanded in the width direction. In the first embodiment, the relief portion 16 and the projection portion 17 are also formed on the first knob operation surface 9 and the second knob operation surface 15 during the same process (projection portion formation step and relief portion). Forming step).
(Picking part forming step: see FIG. 6 (VI))
Finally, arc-shaped processing is performed so that a fixed portion immediately after both end portions 5 and 6 forms a circumferential surface of the tightening portion 2, and the first and second end portions 5 including both the knob operation surfaces 9 and 15 are processed. , 6 are raised from the peripheral surface of the tightening portion 2 toward the outer side in the radial direction. As a result, the first and second knobs 3 and 4 face each other in the circumferential direction, and thus a desired hose clamp H1 is obtained.

  According to the hose clamp H1 of the first embodiment configured as described above, the width dimension of the second knob operating surface 15 that has been conventionally restricted by the opening width of the through hole 7 is made larger than the opening width of the through hole 7. Can also be formed wide. Therefore, the picking operation surfaces 9 and 15 can be easily picked and the picking operation surfaces 9 and 15 are formed to have the same width, so that the picking operation can be performed in a balanced manner.

  Furthermore, in this embodiment, when bending the board | plate material 1 from a development | deployment state to a ring shape, a twist is not accompanied. If twisting is involved, there is a possibility that the influence will be exerted on the tightening portion 2 and its roundness may not be ensured. However, since this embodiment does not involve twisting, the roundness of the tightening portion 2 is ensured, and as a result, the hose can be uniformly tightened over the entire circumference, and high sealing performance can be realized. An effect is obtained.

  Furthermore, in the hose clamp H <b> 1 of the present embodiment, the entire width dimension of the second knob operation surface 15 can be expanded only by expanding the expanded region 19 that was in a bent state to be flush with the base region 18. Therefore, the processing work for expansion is easy. Furthermore, the relief part 16 is bent at the upper edge of the first and second picking operation surfaces 9 and 15, and the protrusions 17 are formed by protrusions on both sides. It is difficult for an operator's finger to touch the upper edge of both the knob operation surfaces 9 and 15 and the both side edges in the width direction which are broken surfaces. Therefore, it is possible to avoid a situation where the operator hurts his / her finger.

<Embodiment 2>
7 and 8 show Embodiment 2 of the present invention.

  As shown in FIG. 7, the hose clamp H <b> 2 according to the second embodiment does not have the through hole 7. The hose clamp H2 of the present embodiment has a configuration in which the first knob operation surface 30 and the second knob operation surface 31 cross each other so as to be staggered in the axial direction. Although the triangular window 10 shown in FIG. 7 is not shown in FIG. 7, it may be provided similarly to the first embodiment.

The hose clamp H2 according to the second embodiment is manufactured through a process as shown in FIG. As shown in FIG. 8I, the unfolded plate member 32 is formed in a point-symmetric shape with respect to the Y axis (deployed shape forming step). As shown in (I), one side edge in the longitudinal direction of the plate member 32 (the side edge shown in the lower side in the drawing) extends straight from the tip of the second end portion 34 along the X axis, and Y After reaching the predetermined position beyond the axis, a gentle slope 35 directed inward is continuous. The end of the gentle slope 35 is located slightly across the X axis. From the end of the gentle slope 35, a straight surface 36 extends by a predetermined length in parallel to the X axis toward the first end 33, and then continues to a steep slope 37 that goes outward. The steep slope 37 is continuous at a position away from the tip of the first end 33 by a predetermined distance. Thus, the one side edge of the first end portion 33 gently inclined surface 35, thinned area 38 formed by the straight surface 36 and a steep slope 37 is formed, the first end 33 than the cutout area 38 by this A first knob operating surface 30 is formed on the distal end side.

Other side edge of the plate material 32 cutout region 38 even (in the figure, the side edges as shown in the upper side) is formed in point symmetry position, the second knob operation surface 31 is formed in the same manner.

Before the hose clamp H2 is bent from the unfolded state, the first and second knob operating surfaces 30, 31 are bent as shown in FIG. 8 (II) (outer width adjusting step). That is, in the first knob operation surface 30, when the bent plate member 32 in a ring shape along the X-axis, one side portion which is located below the X-axis in FIG. 8, except in the second end portion 34 side Since the interference occurs around the meat region 38, the region including the same part becomes the extended region 39, and the remaining region becomes the base region 40. On the other hand, in the second knob operation surface 31, since one side portion located above the X axis in FIG. 8 interferes with the first end 33 side, the region including the same portion is the extended region 39, and the remaining region Becomes the base region 40.

  In the outer width adjusting step, the extended region 39 of the first knob operating surface 30 and the second knob operating surface 31 is substantially perpendicular to the inner side (front side toward the paper surface) at the bent edge 41 along the X axis. It can be bent. As a result, the outer surfaces of the extended areas 39 of the first knob operation surface 30 and the second knob operation surface 31 are located slightly inside the X axis without crossing the X axis. Thus, the first knob operation surface 30 and the second knob operation surface 31 are in the form of interference avoidance reduced in the width direction in the outer width adjustment step.

  From the state of FIG. 8 (II), ring-shaped bending is performed along the X-axis with the Y-axis as the apex of bending (tightening portion forming step). At this time, the first knob operation surface 30 and the second knob operation surface 31 are configured such that the outer surface of the extension region 39 is positioned slightly inside the X axis by bending the extension region 39 described above. If the ring-shaped bending along the axis is performed, it is possible to cross over the peripheral surface while forming the tightening portion 42 without causing interference with the other end portion. Therefore, in the present embodiment, it is not necessary to twist the ring-shaped bending process, which contributes to maintaining the roundness of the tightening portion 42.

Further, as a result of the bending described above, as shown in FIG. 3 (III), the edges in the two thinning regions 38 are aligned in a flush state.

  Thereafter, the expanded region 39 is folded back to the original state (FIG. (IV): widening step). By this step, the first and second knob operating surfaces 30 and 31 return to the original form (expanded form) in which the extended region 39 is expanded in the width direction. In addition, during this step, the first and second end portions 33 and 34 including both the knob operation surfaces 30 and 31 are erected radially outward to face each other. Thus, the hose clamp H2 of the second embodiment is obtained.

Although the relief portion and the protruding portion are not shown, the second embodiment is also formed in the same manner as in the first embodiment (projection portion forming step and relief portion forming step).
Also in the hose clamp H2 according to the second embodiment obtained as described above, the same operational effects as those of the first embodiment can be obtained.

<Embodiment 3>
FIG. 9 shows the second knob operation surface 50 of the hose clamp H3 according to the third embodiment of the present invention, but the first knob operation surface can be configured similarly. In the hose clamp H3 of the third embodiment, when the plate material is in the unfolded state, the expansion region 52 is separated from the base region 51 and is a separate body. That is, in the third embodiment, after the base region 51 is made to enter a through hole (not shown) alone, the pair of extended regions 52 are attached to both side edges in the width direction of the base region 51 via the connection edges 53 by welding or the like. ing.

  In the present embodiment, the width dimension of the base region 51 alone is narrower than the minimum opening width of the through hole (not shown), but the outer width of the second knob operating surface 50 in a state where both the expansion regions 52 are attached. The dimension is set wider than the maximum opening width of the through hole.

  In this embodiment as well, it is possible to form relief portions and protrusions on the first and second knob operation surfaces.

  Also in the third embodiment formed as described above, the same effects as those of the first embodiment can be obtained.

<Embodiment 4>
FIG. 10 shows a state in which the second knob operation surface 60 of the hose clamp H4 according to Embodiment 4 of the present invention is viewed from the outer surface (surface to be picked by a finger) side. Can be configured similarly. In the first embodiment, the protruding portion 17 has a rib shape, but the protruding portion 61 according to the present embodiment has a hemispherical shape instead. Each protrusion 61 is knocked out so as to protrude from the inner surface side to the outer surface side of the first and second knob operation surfaces, as in the first embodiment.

  In this embodiment as well, it is possible to form a relief portion on the upper edge of the first and second knob operation surfaces.

<Embodiment 5>
FIG. 11 shows a state in which the second knob operation surface 70 is viewed from the outer surface side in the hose clamp H5 according to the fifth embodiment of the present invention, but the first knob operation surface can be similarly configured. In the first embodiment, the protruding portion 17 is formed in the shape of a rib that is long in the vertical direction. However, the protruding portion 71 according to the fifth embodiment is formed in the shape of a rib that is long in the horizontal direction (width direction).

  In this embodiment as well, it is possible to form a relief portion on the upper edge of the first and second knob operation surfaces. Although not shown, the direction in which the protrusions 17 and 71 are formed is not limited to the vertical direction or the horizontal direction, and may be an oblique direction that intersects the width direction.

<Embodiment 6>
12 and 13 show a state in which the second knob operation surface 80 is viewed from the inner surface side in the hose clamp H6 according to the sixth embodiment of the present invention, but the first knob operation surface can be similarly configured. . In the present embodiment, the relief portion 81 is formed by bending from the upper edge of the second knob operation surface 80 to both side edges in the width direction to the inner surface side (the surface on the side where the operator does not perform the finger operation). In this way, it is possible to avoid a situation in which the operator's finger touches the upper edge and both side edges in the width direction, which are broken surfaces, without forming the protruding portion.
In this embodiment, the protrusions may be formed together.

<Embodiment 7>
FIG. 14 shows the second knob operation surface 90 of the hose clamp H7 according to the seventh embodiment of the present invention, but the first knob operation surface can be configured similarly. A plurality of anti-slip through holes 91 are arranged on the second knob operation surface 90 in this embodiment.

  With such a configuration, when the operator picks up the operation surface with his / her finger, the edge of each through-hole 91 is caught, so that slip prevention can be achieved.

  Note that the configuration of the anti-slip is not necessarily limited to the through hole, but may be a bottomed hollow shape that is recessed toward the inner surface instead.

<Embodiment 8>
FIG. 15 shows the second knob operation surface 103 of the hose clamp H8 according to the eighth embodiment of the present invention, but the first knob operation surface can be configured similarly. In the present embodiment, an extension region 101 is attached to the left side of the base region 100 via a connecting edge 104, and an extension region 102 is continuous to the right side of the base region 100 via a bent edge 105 . That is, when the hose clamp H8 is in the unfolded state, one of the expansion regions 101 is separated from the base region 100 and separated, but the other expansion region 102 is bent at a right angle as shown in the figure. It has become. And after making the 2nd knob operation surface 103 side approach to the through-hole which is not shown in figure, one expansion area | region 101 is connected by welding to the one side of a base area | region, and the other expansion area | region 102 is folded back.

  In the eighth embodiment configured as described above, the same operational effects as those of the other embodiments can be obtained.

<Other embodiments>
The present invention is not limited to the embodiment described above, and the following modifications are also included in the technical scope of the present invention.

  In the embodiment, the narrow portion is formed to have a width dimension that allows the entire width to enter the through hole, including the widest root portion, but the root portion does not enter the through hole. May be formed larger than the minimum opening width of the through hole.

  In the first and second embodiments, both the extended areas of the second knob operation surface are bent inward, but may be bent outward. Furthermore, one extension region may be bent inward and the other extension region may be bent outward.

  Furthermore, although the plurality of ribs are arranged in parallel in the fifth embodiment, they may be arranged so as to intersect with each other.

DESCRIPTION OF SYMBOLS 1 ... Plate material 2,42 ... Fastening part 5 ... 1st edge part 6 ... 2nd edge part 7 ... Through-hole (passed part)
9, 30 ... first knob operation surface 11 ... narrow part 15, 31, 50, 60, 70, 80.90, 103 ... second knob operation surface 16, 81 ... relief part 17, 61, 71 ... projecting part 18 , 40,51,100 ... base region 19,39,52,101,102 ... extended area 20,41 ... bent edge 38 ... cutout area (the passage section)
53 , 104 ... Connection edge H1 to H8 ... Hose clamp

Claims (10)

A band-shaped plate material is bent into a ring shape so as to intersect on the peripheral surface to form a tightening portion, and a hose clamp capable of tightening a connection portion between a hose and its connection partner at this tightening portion,
The plate member is formed in a substantially line-symmetric shape with respect to the X axis, which is a central axis extending along the longitudinal direction, and is disposed on one end side in the longitudinal direction, and a first knob operation surface is formed at the end portion. A first end;
A second end portion disposed on the other end side in the longitudinal direction and having a second end operation surface formed opposite to the first knob operation surface at the end portion;
A long hole-shaped through hole is opened on the first end side and closer to the center in the longitudinal direction than the first knob operation surface, and is longer than the second knob operation surface on the second end side. Near the center of the direction, a narrow portion that can enter the through hole is formed,
The second knob operating surface is
A base region formed to be substantially smaller than the opening width of the through hole, and an outer width dimension of the second knob operation surface arranged to be foldable with respect to the base region at the side edge in the width direction of the base region. The hose clamp is characterized in that the hose clamp is formed from an extended region that is wider than the opening width of the through hole . In at least one of the first knob operation surface and the second knob operation surface, a protruding portion is formed to protrude outward in the thickness direction on the surface opposite to the surface where they face each other. The hose clamp according to claim 1. In at least one of said first and second knob operation surface to claim 1 or claim 2, characterized in that part relief toward the opposite side at least one peripheral portion is formed by bending Hose clamp as described. The hose according to any one of claims 1 to 3, wherein a concave portion or a through hole for preventing slipping is formed on at least one of the first and second knob operating surfaces. Clamp. A method for manufacturing a hose clamp, in which a strip-shaped plate material is bent into a ring shape so as to cross over the peripheral surface, and a connection portion between a hose and its connection partner is tightened,
  Both end sides of the plate material are a first end and a second end, and a first knob operation surface and a second knob operation surface are formed at the respective leading ends of the first end and the second end. And an X-axis that is a center axis along the longitudinal direction of the plate member, and a passing portion is formed closer to the center of the longitudinal direction than the knob operating surface on at least one of the two knob operating surfaces. Before bending in an annular shape along an outer width adjusting step for setting an interference avoidance form having an outer width dimension that does not interfere with a site around the passing portion, on at least the other side of the both knob operation surfaces;
  The center in the longitudinal direction of the plate material is bent in an annular shape along the X axis with bending as the lowest point, and at least the other side of the both knob operation surfaces is allowed to pass through the passing portion. A tightening portion forming step of forming a tightening portion capable of deforming in the reduced diameter and diameter increasing directions by crossing the first end portion and the second end portion on the peripheral surface;
  After this tightening part forming step, with respect to at least the other side of the both knob operation surfaces, a widening step for processing into a widened form in which the same surface is expanded in the width direction;
  A method for manufacturing a hose clamp, comprising: The passing portion is a through hole formed in a long hole shape at the first end portion, and in the outer width adjusting step, the second knob operation surface is bent at both sides in the width direction so that the entire outer width is increased. The interference avoiding form is formed to be equal to or narrower than the opening width of the through hole, and the second knob operating surface is passed through the through hole in the tightening portion forming step, and both sides in the width direction in the widening step. 6. The method of manufacturing a hose clamp according to claim 5, wherein the portion is folded back to form the widened form. The plate material is formed in a substantially point-symmetric shape with respect to the Y axis that is orthogonal to the X axis and passes through the center of the plate material in the longitudinal direction, and the first material is formed at the longitudinal end of the first end portion. Both the first knob operation surface and the second knob operation surface are formed to have a width range across the two regions sandwiching the X axis, and are arranged on the first end side and the second end side, respectively. In addition, both of the passing parts are thinning regions cut out to a depth that reaches or crosses the X axis from one side edge of the plate inward.
In the outer width adjusting step, the first knob operating surface and the second knob operating surface are both bent on the side where the thinning area is arranged, of the two areas sandwiching the X axis. The interference avoiding form in which the side surface in the longitudinal direction of the bent portion is located along the X axis or away from the X axis,
6. The method for manufacturing a hose clamp according to claim 5 , wherein the first knob operation surface and the second knob operation surface are formed into the widened form by folding back a bent portion in the widening step . In at least one of the first knob operation surface and the second knob operation surface, a protruding portion is formed in which a protruding portion protruding outward in the thickness direction is formed on the surface opposite to the surface facing each other. The method for manufacturing a hose clamp according to any one of claims 5 to 7 , further comprising a step . A relief portion forming step for forming a relief portion in which at least one edge of the peripheral edge is bent toward the opposite surface side in at least one of the first knob operation surface and the second knob operation surface; A method for manufacturing a hose clamp according to any one of claims 5 to 8 . The process for forming the recessed part or through-hole for anti-slip | skid in at least any one of the said 1st and 2nd knob | pick operation surface is contained in any one of Claim 5 thru | or 9 characterized by the above-mentioned. The manufacturing method of the hose clamp of description.

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